import re
text = 'Good Morning \nHello There - PROTECT FROM FREEZE\nprotect from freeze \nFORKLIFT UNLOAD -PLEASE HAVE SKID AT TAIL \nThank you'
res = re.findall(r'[^-\n]*\bF(?:REEZE|ORKLIFT)\b[^-\n]*', text, re.IGNORECASE)
print( [x.strip() for x in res] )
aW1wb3J0IHJlCnRleHQgPSAnR29vZCBNb3JuaW5nIFxuSGVsbG8gVGhlcmUgLSBQUk9URUNUIEZST00gRlJFRVpFXG5wcm90ZWN0IGZyb20gZnJlZXplIFxuRk9SS0xJRlQgVU5MT0FEIC1QTEVBU0UgSEFWRSBTS0lEIEFUIFRBSUwgXG5UaGFuayB5b3UnCnJlcyA9IHJlLmZpbmRhbGwocidbXi1cbl0qXGJGKD86UkVFWkV8T1JLTElGVClcYlteLVxuXSonLCB0ZXh0LCByZS5JR05PUkVDQVNFKQpwcmludCggW3guc3RyaXAoKSBmb3IgeCBpbiByZXNdICk=